Rotary engine or pump



K. G. KUTCHKA.

ROTARY ENGINE OR PUMP.

APPLICATION FILEDJULY11,1918.

Patented Apr. 13, i920.

-cylinder heads ce andv b KARL c+. Rurouni, or YoUNGsTowN, oHro.

ROTARY ENGINE OR PUMP.-v

Specification .of Letters Patent.

Patented Apr. 13, .1920.

Application led J'uly 11, 1918. Serial No. 244,500.

To all whom z't may concern:

Be it knownthat I, KARL G. KUTCHKA, subject of the Emperor of Austria,residing at Youngstown, in the'lcounty of Mahoning and State of Ohio,have invented certain new and useful Improvements in Rotary Engines orPumps, of which the` following is a specification.`

This dinvention relates, to rotary engines, compressors or pumps, theprimary object being to' produce a device of this character of maximumeiiiciency and minimum strain and wear-upon the component parts.

The invention consists primarily of a cylinder within which iseccentrically mounted a rotating piston provided with longitudinal,radial grooves or slots carrying reciprocating operating blades orwings. lFigure l is a cross-section on the line 1 1 ofF ig. 2; Fig. 2 isa longitudinal-section on the line 2-12 of Fig. l; Fig. 3 isacross-section through `the center or guide ring; Figs. 4, 5 and 6 arefragmentary views showing various'details of the center .ring and itsrelation to or connection with the operating blades.

Illhe same reference characters indicate the same parts throughout theseveral figures of the drawings.

C represents the cylinder, with its two provided, respectively, with thein-let and out-let openings c' and o, and with suitable water jacketsfor cooling or heating purposes as may be dcsired. Y A

l? represents the rotating piston mounted upon the shaft` S which, inturn, is mounted in the eccentric bearings d and e formed in thecylinder heads a and' o, respectively, these bearings being so disposedin the cylinder heads that at one point inthe cylinder there will bemerely a working clearance between the periphery of the piston and theinner wall ofthe cylinder, while the opposite point in the cylinder-willbe the widest portion or part of the crescent-shaped'space or chamber gbetween the piston and the cylinder. r To the outer ends of this shaftsuitable wheels or pulleys may be attached for the necessary and propertransmission of power.A i

vThe piston p is provided with a plurality of longitudinal, radial open'grooves or slots 'u extending the full length of the cylinder and fromits surface toward its center.

Loosely land slidably mounted in these grooves are the reciprocating.operating` blades f, extending from end to end. Each of these blades .isprovided at its inner edge with oppositely disposed elongated portionsg, each of which is fitted with a cylindrical p-in k, the purpose ofwhich will be immediatelyv explained.

The inner face of each cylinder head, a and b, is formed with asubstantially concentric annular recess j, within which is rotatablymounted a guide or center ring lc. This ring is also providedl in itsinner face with a concentric annular groove Z in which the pins hcarried by the operating blades travel. If desired, the pin -L may beprovided with a sleeve or roller m, which will contact with 'theopposite walls of the groove Z in the ring 7c, thus reducing thefriction between these elements.

ln order that the center or guide ring c may revolve with the same speedas the piston 7), these-two elements may be connected by thepin n, oneend'of which is fastened to the ring at its enlarged portion 7', whilethe other end slidably engages the slot s in the end of the piston, thusaffording compensation made necessary by reason of the difference in theaxes around which these two elements revolve. Another vmethod ofaccomplishing the same purpose is shown in Fig. 6, where the pin textends into an opening in the end of the ring c.

It is obvious that as the piston p revolves, the operating blades y@will be forced out wardly into the chamber g by centrifugal force, whileat the same time the same reciprocatingmotion would be imparted theseblades through the engagement of pins It on the .blades with the annulargroove in the center ring, and this construction also performs thefurther very desirable function of maintaining the outer edges of theblades a uniform distance from the inner wall of the cylinder, allowingmerely a working clearance between the same, thus entirely avoidingfriction between these two parts of the construction.

Briefly described, the operation of my invention is as follows, used asa compressor: The air enters at the opening z' through chamber 'w intochamber g, and as'thepiston rotates inthe direction of the arrow theoperating blades will loe-forced outwardly' into chamber g, where theywill pick up the air and force it forward into a constantly decreasing sace until it reaches the chamu ber t, intowhich it passes and isdischargeil,FV Y'p1iinp, a cylinder having an inlet and an throughthe'op'ening o into suitable retaining means or supply lines..

Used asI an engine, the operation' is, ofQ course, reversed,-the motivepower enter. ing at the opening o., through the chamber v t a'n'dintothe chamber g, Where it gradually expands, forcingthe blades ahead ofit,

until it reaches the opening i, through whichl it escapes. I claim: p

1. In .a rotary engine, compressor' or pump, a cylinder vhaving-anin-let and an out-let opening,` in combination with a rotatingpistoneooentrically mounted therein s and provided with grooves in whichrecipro-v cating blades are carried, rings to control the movement ofsaid blades, and a pin carried 'by each of said rings and slidablyengagixg a radial slot in theend of the piston. 2. n .a rotary engine,compressor or pump, a cylinder having an in-let and an out-'let opening,in combinationI with a rotating piston eecentrically mounted therein andprovided with grooves in which reciprocating operating blades arecarried, guide rings carried in the inner face of the cylinder heads tocontrol themovement of the blades, anda pin carried by each of saidrings andslidably engaging a radial slot in the'end of the piston. p

v 3. In a rotary engine,y compressor Ior out-let opening, in combinationwith a rotating piston eecentrically mounted therein and provided 'withgrooves in which reciprocating operating blades are carried, guide ringscarried in the inner facesof the cylinder heads to control the movementof said blades,said blades' being provided with elongated portions attheir inner edges to engage said rings, and a pin carried by each ofsaid rings and slidably engaging a radial slot in the end of the piston.

4. In a rotary engine, com ressor or pump, a cylinder having an'I inetand an out-let opening, incombination with a rotating pistoneccentrically mounted'therein and providedv -with grooves in whichreciprocating operating blades are carried, guide rings carried in theinner faces of the cylinder heads to control the movement of said nulargrooves and said blades being provided with elongated portions to engagesaid grooves, and a iin carried by each. of said rings and slida lyengaging a radial slot in the end of the piston.

In testimony whereof hereunto aiiix my signature in the presence of twowitnesses.

KARL G. KUTCHKA. Witnesses: Y

JOHN A. FITHLAN, B. W. BRooKwAr.

`blades,-said rings being provided with :n-

